Brick or the like



W. H. HILL.

June 15, 1937.

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June 15, 1937. l W. H. Hu.; 2,084,141 'l BRICK OR THE LIKE Filed Ag. 1e, 1935 2 sheets-sheet 2 1 C l w d' #few 1g ww f A m 1 1A f cl \b Patented June 15, 1937 UNITED STATES PATET oFFlcE Application August 16, 1935, Serial No. 36,516 In Great Britain August 15, 1934 2 Claims.

This invention relates to bricks, tiles, slabs, and moulded shapes, or the like--or walls composed of same-and has particular reference to the walls of public and private conveniences,

lavatories and the like.

The object of my invention is to provide a brick, tile, slab or moulded shape having a surface adapted to prevent or render diflicult defacernent thereof or a wall thus protected from by writings in pencil, chalk, or the like thereon; the surface being preferably so fashioned that its hygenic properties are unimpaired or enhanced by improved cleaning facilities afforded by or presented through its construction.

roadly my invention comprises a brick, tile, slab, or moulded shape (or Wall constructed of same) composed of any suitable substance and adapted for cementing or otherwise afxing to a wall or backing and having its outermost face of which consists of a plurality of small sharp or rounded ridges spaced apart but arranged closely together in parallel disposition, each ridge being the peak of two angularly disposed flat faces. There is thus produced a surface presenting a plurality of outwardly projecting and recessed parts closely placed together in parallel or other disposition or inclination; the construction being such that any attempt to use a pencil or like writing medium upon such surface is frustrated as hereinafter described.

The roughenings or serrations may, for the purposes of mural decorations, run either vertically, laterally, or otherwise.

I will further describe my invention with the aid of the accompanying sheets of explanatory drawings which illustrate, by way of examples only, two modes of embodying same.

In said drawings1- Fig. 1 represents a portion of a wall composed of bricks constructed according to my invention.

Figs. 2 to 4, inclusive, illustrate one of the bricks drawn to an enlarged scale as compared with Fig. l. In these views, Fig. 2 is a front ele- 45 vation, Fig. 3 an end View, and Fig. 4 a plan.

Figs. 5 and 6 show my invention embodied in the form of a slab, Fig. 5 being a front elevation and Fig. 6 a plan view.

In the several views like letters of reference 50 denote like or equivalent parts wherever they occur.

Referring to the drawings, but rst more particularly to Figs. l to 4, inclusive, there are formed on the face of brick A a plurality of small rounded ridges arranged in parallel disposition, each marked b and each being the peak of two angularly disposed flat faces c, the opposite parallel edges whereof terminate (to provide a narrow 60 and shallow gap d) a short distance from the (Cl. 'YZ-37) corresponding sides c of the adjoining or adjacent parallel peak or ridge b in such manner that there is provided a surface presenting a plurality of outwardly projecting and recessed parts b, c placed together in parallel disposition. Thus, any attempt to use a pencil or like writing medium upon the surface of the brick is frustrated either by rendering the markings undecipherable or by destruction of such medium by reason of its being cut or broken or diverted when applied to or passing across or over such surface. Said narrow and shallow spaces d left between adjacent angular faces c are for the purpose of retaining and maintaining the desired alignment of the bricks when being set or cemented together as illustrated in Fig. 1, the mortar or cement being represented by the dotted portions e.

To facilitate the use and passage of a trowel in the laying of said bricks, the ends of the projections b, c are chamfered as shown at c1.

The slab iliustrated in Figs. 5 and 6 is shaped on the outer face as a plurality of column-like members or projections and recesses having the characteristics of those of the brick hereinbefore described with reference to Egs. l to 4, inclusive.

A preventative surface as hereinbefore described may be of any desired tint or colour and may be merely sufficient to cover the portion or portions of a Wall required for said protection, whilst the remainder of the wall may be finished in other desired manner.

What I claim as my invention and desire to secure by Letters Patent is:-

1. A building unit the outermost face of which consists of a plurality of small rounded ridges spaced apart but arranged closely together in parallel disposition, each ridge being the peak of two angularly disposed flat faces, and said ridges with their angularly disposed flat faces which combine to substantially cover the full area of said outermost face, being spaced apart from one another so as to provide narrow gaps therebetween alsc in parallel disposition with said ric ges, as and for the purpose specified.

2. A building unit the outermost face of which consists of a plurality of small rounded ridges spaced apart but arranged closely together in parallel disposition, each ridge being the peak of two angularly disposed at faces, and said ridges with their angularly disposed flat faces which combine to substantially cover the full area of said outermost face, being spaced apart frozn one another so as to provide narrow gaps therebetween also in parallel disposition with said ridges, and the ends of said ridges being chamfered, for the purpose specied.

WILLIAM HENRY HILL. 

